What AI does well and what it does not
AI is excellent with form: laying out the situation as facts, building a chronology, writing in a calm business tone, bringing the text to the usual document structure and removing emotion. It is weakest at exact legal references, deadlines and the rules of a specific country: invented articles and non-existent norms are common. So split the work. The AI writes structure and wording, while you check legal norms, deadlines and recipients against official sources in your country or with a lawyer.
What a good complaint contains
A document usually includes: the addressee (organisation and position), the sender (your details), a short title, the facts with dates and contract or order numbers, what the breach is, what you demand, a deadline for the reply and a list of attachments (copies of the receipt, correspondence, photos). The tone is calm and factual: no insults or threats. The more precise the dates, amounts and numbers, the harder it is to brush the complaint off. All this data must be gathered before you turn to the AI: it will format it but cannot invent it for you.
How to write the prompt
Give the AI the facts as a list and ask it to draft the document. For example: who it is addressed to, the essence of the situation by date, what exactly was violated, what you demand and by when. Ask for a formal business style, no references to specific laws and articles (you will add them after checking), and square-bracket notes wherever data is needed. This gives you a tidy draft without invented norms. If you want to discuss wording options for the demand, ask it to propose two or three and explain the differences.
How to check the result before sending
Read the whole document and match every date, amount and number with your papers. Make sure there are no statements you did not make. If you add references to laws, find their text on an official portal and check that they are in force and relate to your situation. Remove emotional wording. Keep a copy and a way of sending with proof of receipt: a registered letter or an official electronic channel. If the dispute is serious or the amount is significant, show the document to a lawyer: checking a draft costs less than fixing mistakes.
Personal data and safety
While you work on the draft in the AI, replace real names, addresses, contract numbers and phones with placeholders like “Applicant”, “Company X”, “[contract number]”. Insert the real data later into the finished document in a text editor. That way you do not pass extra data to an outside service. And remember: AI does not fully know your situation, does not see your documents and is not responsible for the outcome. It is an assistant with formatting; decisions about what to demand and where to turn stay with you or your lawyer.